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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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140Maggenti and Gardnerwith a simple or branched gastrovascular canal.bracteiform a. [L. bractea, small leaf; forma, shape] Bractlike.bracteose a. [L. bractea, small leaf] With numerous bracts.bradyauxesis n. [Gr. bradys, slow; auxesis, growth] A form <strong>of</strong>heterauxesis in which the growth process <strong>of</strong> a part is lessthan that <strong>of</strong> the whole. see isauxesisbradygenesis n. [Gr. bradys, slow; genesis, beginning] Retardeddevelopment in ontogeny. see tachygenesis.bradytelic a. [Gr. bradys, slow; telos, completion] Pertainingto evolution, evolving slowly; slower than the standardrate. see horotelic.brain n. [A.S. braegen, brain] 1. The nervous center <strong>of</strong> invertebrates.2. (ARTHRO) The cephalic nerve mass; the encephalon,the supraesophageal ganglion; the archicerebrum.3. (NEMATA) The nerve ring and associated ganglia.brain hormone (ARTHRO: Insecta) A secretion <strong>of</strong> the brain activatingthe prothoracic glands.branch n.; pl. branches [OF. branche, branch] 1. That whichputs forth branches. 2. A primary division <strong>of</strong> a taxonomicgroup. 3. A gill.branched see ramifybranchia n.; pl. -chiae [Gr. branchia, gills] Respiratory organs;a gill; a ctenidium.branchial a. [Gr. branchia, gills] Pertaining to gills or branchiae.branchial aperture The exterior opening <strong>of</strong> a gill chamber.branchial basket (ARTHRO: Insecta) In Odonata, a chamber <strong>of</strong>the rectum that contains the rectal gills.branchial carina (ARTHRO: Crustacea) In Decapoda, that part<strong>of</strong> the carapace extending posteriorly from the opening(orbit) in the anterior face over the branchial region.branchial chamber (ARTHRO: Crustacea) That area betweenthe body and carapace enclosing the branchiae; the gillchamber.branchial cleft A gill slit.

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